Front-wheel brake



- 1,543,792 H. PERRQT FRONT WHEEL BRAKE Filed July 24, 1922 I s Sheets-Sfieet 1 Jury/232w El ar/0f FRONT WHEEL BRAKE Filed July 24 1922 3 Sheets-Sheet 3 Patented daily 21, 1925..

' HENRI PERROT,-OF PARIS, FRANCE.

FRONT-WHEEL BRAKE.

Application filed July 24, 1922. Serial No. 577,202.

To all AU/19m 7'2? may concern Be it known that 1, Hana li-zuizo'r, citizen of the lirench ltepuhlic, residing at Paris, in the llepuhlic of France, have invented new and metal Improvements in l ront-l theel Brakess, of "which the following a specification.

in the greater numher of the lmowni l ront means employed. it is also advantageous as concerns the steering of the vehicle and chiettv for heavy "chit-ice," and hauling wagons. that the said pivots should have the minimum inclination, tor a greater inclination will give harder steering when turning the who since one side of the vehicle taunt-"he rained. and the extent. of the latter action will depend upon the angle of inclination and the :eteeriru angle.

This invent ion relates to improvements in trout wheel lttlliitlfi consisetingr firstly in so disposing the elements that; the axis of the axle pivot. which may he displaced from the vertical line passing through the axis of the spindle. shall he vertical or very nearly so, and that the extension of said axis shall meet with the ground at. a point adjacent the oint. of ontact. hctween wheel and ground. while admitting the use oi all known types of wheels such as wheels with metal spokes. wood spokes. disc Wheels and the like: and secondly. in disposing the universal joint tor articulation no that.- one ol its pivoting axes shall he in the prolongation of the pivot. axis 01 the axle or parallel to the. plane of the wheel. the latter hcing obviously inclined to a slight extent so as to atl'ord the desired setting. or again. in an iutermwliatc position. the axis of the cam coinciding with the axis of the ard-an shalt or not coinciding with the same hut hcing paralicl to 1-iaid ahat't.

The following description. together with the accompanying drawings which are given by wn} olcxampl sets l'orth this invention.

Fig. l is a StBtJtltiIitll View of one of the trout or Hlt-lttlttl! Wheels of a motor vehicle provided with the hralie mechanism.

Fi s. 2 to are'detail. views of the brake control Fin. 2 shows the can] in front view,

Fig. 3 one of the branches of the universal joint actuating the cam,

Fig. l the core of the joint and the cam, and i i Fig. 5 the second hranch oi the universal joint 'lltll'titlptill is mounted the drivers control device.

Figs. (3, 7 and 8 are elevational views of a modified term of the drive, wherein the vertical axisot' the cam is displaced with respect to the vertical axis of the jo int.

Figs. (3, T and 8 are respectively plan Views corresponding to Figs. (3, 7 and 8.

Fig. l) is a front view of a n'iodilicd form wherein the axis of the axle pivot is displaced with reference to the vertical plane passing through the axis ol the spindle.

Fig. 10 is a modilied lorm ol' Fig. 1.

As shown in Fig. l. the spindle 3 is movahle upon the hody ot axle 1 on the pivot :2 which is perpendicular to the ground. lipon spindle it is movahle the huh 4 ol wheel 5 which i.-; herc represented with metal spokes hut ma he otherwise constrlu-ted. The plane ol wheel 5 whcreot the direction is shown at 6 upon the vertical plane ol' the Section ol' the ligrurc, is inclined to the vertical hy the usual amount ol s tting which is given to the trout wheels ol motor vehicles. The pivot i heing' vertical. to ohtain this result the axis of spindle I} is some what inclined to the horizontal. 'lhe cx tension ol the axis of the pivot 3 meets with the 'i'ound at a point T which is very near the point not contact. with the pneumati tyre.

'l'hc huh 4 carries the hrakc drum it which i.-; secured thereto. Within said drum are one or more hrakc shoes I) which are hrougzht into contact with the -drum h v means ol' cam ll actuated hy the lever 12 onnected with the hral-zc nu-chanism). and

the rhal't i i, the universal joint ll. hein inttfil'luhtill shall 13 is connected with the vehicle l'rame h v the support, 15 and a sliding; junction with hall 16.

'lhe centre 17 of the lH'liVQt'Fitl joint ll situated upon the axis ol' the axle'pivot, or at a point near the same. The axial plane lei ot' cam 11. a. may he observed in Fig. 4-, whi h contains the VHtiCttl axis of the Cardun joint and consequently its centre 17, may he parallel to the plane (5 ot the wheel lUU rough the axis of the pivot H may o' cupy intermediate posithe axial plane 18 of the 1:1 angle with the axis of the will when it is parallel to the wheel, mounted as illustrated above, then a differentiating ring ellects of the steering incd when the brakes are e of turning; that is to say, ing wheels will be acted on branes than the other. In

.Jlnstrated as a will be apwhich angle will remain s l. r r J winstant, lloth differentiating and l0i1-llliiQTfii'itlllillng action of thls -l i place as explained in French c 9, published July 2, 1921,

Jean Norah. ,n in Figs 2- to 5 that the rotail ebcctcd as "follows. The ri'ita'ringg will turn by means i!) the ball H: of the joint which arm of thei'ork secured to the latter is provided with teeth c teeth oi" an operating shaft pal with cam 11 and the same actuated. Since the universal r s ew; within a recess iii-the opsnail for the cam or its. equivalent, *onnl; the whole device Within the and this will give a very satis urnnce to the wheel. o 6% and (5" to 8 show a modified fn the axial plane 18 oi cam 11 parallel to the pivoting axis joint I l, with respect to the a joint. The said displacceli'ccled within or without the with rci'crcucc to the wheel 1a a :uodilicd form of construccmnnls oi the invention wherethe axle pivot 2 is displa ed the vertical plane passing ii the spindle 3. Fig. ll) lorm. ol" the drive of the Rio drive being herein ell'ectcd horizontal or inclined. which l by the lever 12 and thus rouspport l5 scoured lo the main lo i. the upper part oi said I, bcanngr.

" devices licreinbehn'o deplihle ol ll desired modicpari'ingr from the princi- V vibe-1i luv invention, what lg W and (lHIl'l; to secure by Letopcralinp brakes on :1 Wheel ilc pivol *d to an axle ol a in combination. a brake wlmr-l, a circular plate 'en-r to make this angle such carried by the spindle and fitting over the opening of the drum and having brake shoes supported thereon, a. cam support on said plate, a cam carried by said support and extending into operative relationship with said brake shoes, a shaft for actuating said cam, an element arranged in a recess of the shaft snbstantially in the plane of the cam and forming a universal joint between the shaft and cam, means for supporting said shaft, andmeans for actuating the shaft.

2. Means for operating brakes on a Wheel carried by a spindle pivoted to an axle of a vehicle comprising; in combination, a brake drum carried by the wheel, a circular plate carried by the spindle and fitting over the opening of the drum and having brake shoes supported thereon, a support on said plate, a hollow operating shaft journalcd in said support, a connecting member inside and pivoted to the shaft, an operatingshaft extending into the hollow shaft and pivotally connected with said connecting member, means for supporting the shaft, and means for actuatin the same.

3. Means For operating brakes on a wheel carried by a spindle pivoted to an axle of a vehicle comprising"; in combination, a brake drum carried by the Wheel, a circular plate carried by the spindle and fitting over the opening of the drum and havingbrake shoes supported thereon, a cam support on said plate, a am member carried by said support and extending into operative relationship with said brake shoes, a connecting member pivotally supported by said cam member substantially in the plane of the cam portion and movably connected thereto, anoperating shal't movably connected with said connecting, nicmbor, means for'snpporting the shaft and moans 'l'or actuating the same.

4. lllcans l'or operating, bra kcs on :1 Wheel carried by a spindle pivoted to an axle of a vchiclc comprising; in combination, a brake drunrcarricd by the whccl, a circular plate (urricd by the spindle and fitting over the opening ol'lho drum and having brake shoes su 'iported tbcrcon. said plate. a hollow cam mcniber carried by said support and cxtcndins into operative rclal'ionship with said brake shocs, a connecting mcmbcr smallcr in diameter than the hollow part of said cam member and inovr ably supported by a part of the cam menu bcr with a driving connection thereto, an opcratingr sha'lt having one end extending within the hollow cam into movable engagement with said connertiimmember, means for niovaldysupporting the other end of said shaft and means for actuating the same.

5. h'lcuns For o 'u'erating brakes on a wheel carried by a spindlc pivoted to an axle of a vehicle comprising; in combination, a brake drum carricd by the wheel, a circular plate carried by the spindle and fitting over a cam support on the opening of the drum and having brake shoes supported thereon, a cam support on said 'platepa hollow cam member having notches in one end thereof, carried by said support and extending into operative rela-;

tionship with said brake shoes, a connect ing member positioned. within the hollow part of. the c'ammember and having in effect two sets of diametrically arranged grooves; a forked member for engaging one set of said grooves, said forked member having teeth on its periphery for engaging said notches in the end of the cam member, an

operating shaft having-one end. forked to engage the other pair of grooves in the connecting member, means for slidably supporting the other end of said shaft, and means for actuating the shaft.

6. Means for operating brakes on a wheel carried by a spindle pivoted to an axle of a vehicle comprising; in combination, a

. brakedrum carried by the wheel. a circular plate carried by the spindle and fitting over the opening of the drum and enclosing the brake shoes within the drum, said plate having a boss.- a cam member supported by the boss but having portions extending through the boss into operative relationship with the brake shoes, an operating shaft, a connecting member carried by said cam and having a universal joint driving connection with the cam and shaft, the construction and arrangement of said joint parts being such that the pivoting axis of said universal joint may be coincident with the axial plane of the cam.

7. Mechanism for controlling brakes on a wheel of a vehicle comprising; in combination. a hollow cam member supported in cooperative relationship with the brakes, a ball shaped member carried by the cam member and having in effect two sets of grooves with means engaging one set of grooves for completing a movable driving connection with said cam member. an operating shaft having a forked end extending into the cam member to drivinglv engage the other pair of grooves in the ball. a support for the other end of said shaft on a non-rotating part of the vehicle. and means for actuating said shaft.

R. Mechanism for controlling brakes on a wheel of a vehicle comprising; in combination. a cam member having a hole theretl'irough with supporting means to hold the cam in co-rn'ierative relationship with the brakes, a ball shaped member smaller in diameter than the hole through the cam and having annular grooves arranged at right angles. with means fitting in one groove on opposite sides of the ball for drivingly connecting the ball to the cam, an operating shaft having an end extending into the cam to fit the other groove on opposite sides of the ball. a movable joint support for the other end of the shaft .on a non-rotating part ing shaft having an interior recess and journalled on the support, a connecting member in the recess, a normally coaxial shaft arranged to be operated to apply the brake and pivotally engaging said connecting member, and a part extending into the re 'cess at the opposite end from the coaxial shaft and pivotally engaging the connecting member at right angles to the coaxial shaft and arranged to operate the operating shaft, the axes of the two connections to said connecting member being substantially at right angles to each other, forminga universal joint.

10. Mechanism for operating" a front wheel brake including a support swivelling with the spindle and comprising, in combination, a cam. a shaft secured to the cam and journalled at both ends and formed with a recess. an operating shaft normally coaxial with the cam shaft, and a connecting member pivotally connected to the cam shaft and the operating shaft and arranged in the recess substantially in-the plane of the cam.

11. Mechanism for operating a brake for a wheel swivcllin'g about a generally verti-- ca] steering axis and comprising, in combination; two shafts normally coaxial and one of which swivels with the wheel. the latter shaft being formed with a recess, and a connecting member in said recess midway between the ends of said latter shaftand substantially in said'steering axis, the connecting member being pivoted to the two shafts for movement about axes at right angles to each other to form a universal joint, the vertical one of said axes forming an acute angle with the steering axis.

12. Brake operating mechanism comprising, in coml'iination. a hollow shaft carrying a cam, a member secured to one end of the shaft having a fork 20 extending into the shaft. a hall 1-} having two grooves at right angles to each other and one of which grooves receives the fork 2i and an operating shaft 13 extending into the hollow shaft and having a fork'lf) received in the other groove.

13. Operating mechanism for a brake for a wheel swirelling about a generally vertical steering axis and having a su 'iporting plate swivelling with the wheel and comprising, in combination. a part carried by the plate and formed with a horizontal cvlindrical bore. a relatively short shaft having a bearing in said bore, a normally coaxial shaft entering the end of said bore, and a connecting member within said bore. and substantially in 'the steering avis and pivotally connected to both shafts for move- IOU llU 

